[sdiy] Pole Mixing

Mattias Rickardsson mr at analogue.org
Wed Apr 14 21:00:56 CEST 2021

David Moylan via Synth-diy <synth-diy at synth-diy.org> skrev:

> cheater cheater wrote:
> > David G Dixon via Synth-diy wrote:
>  (including
> >> the famous double-notch mode, which has the gain factors of
> 1-4-12-16-8).
> > Is that different from 2NT they list in the app note? There's no mode
> > with 1-4-12-16-8.
> They don't have this one in the app note.

Try doubling those numbers to 2-8-24-32-16 and see if you find something
similar. :-)

It's the most complex allpass mode 1-8-24-32-16, called "4AP" in the app
note, mixed with the direct signal.

I didn't know it was famous

:)  I came across it as well poking around in my app.

Me neither. I came across it a month ago while simulating different filter

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